What is a rape kit backlog?

The backlog of unanalyzed sexual assault forensic exam evidence is often referred to as a DNA backlog or “sexual assault kit backlog” or “rape kit backlog”. Backlog occurs when SAKs are collected but DNA analysis is not requested (unsubmitted SAKs). Backlog also occurs when SAKS are submitted to crime labs, but not tested in a timely manner (untested SAKs).